Hi Luke, > It's possible that running with "-v" might give a bit more information. Here's the output from that. I've set git-p4.branchUser in this test to avoid needlessly cluttering the output since I have a huge amount of branches in my Perforce repo, but otherwise I used the exact script which I've included later in this email: Importing from //depot/testing/...@all into . Reinitialized existing Git repository in /home/amiller/Code/git-migration/repos/testing/.git/ Reading pipe: ['git', 'config', '--bool', 'git-p4.useclientspec'] Reading pipe: ['git', 'config', 'git-p4.branchUser'] Reading pipe: ['git', 'config', 'git-p4.user'] Reading pipe: ['git', 'config', 'git-p4.password'] Reading pipe: ['git', 'config', 'git-p4.port'] Reading pipe: ['git', 'config', 'git-p4.host'] Reading pipe: ['git', 'config', 'git-p4.client'] Reading pipe: ['git', 'config', '--int', 'git-p4.retries'] Reading pipe: ['git', 'config', '--int', 'git-p4.retries'] Opening pipe: ['p4', '-r', '3', '-G', 'login', '-s'] Opening pipe: p4 -r 3 -G branches -u amiller Reading pipe: ['git', 'config', '--get-all', 'git-p4.branchList'] p4-git branches: [] initial parents: {} Getting p4 changes for //depot/testing/... Opening pipe: ['p4', '-r', '3', '-G', 'changes', '-m', '1'] Opening pipe: ['p4', '-r', '3', '-G', 'changes', '//depot/testing/...@1,1048577'] Opening pipe: ['p4', '-r', '3', '-G', 'changes', '//depot/testing/...@1048578,1206544'] Opening pipe: ['p4', '-r', '3', '-G', 'describe', '-s', '1206099'] Importing revision 1206099 (25%)Reading pipe: ['git', 'config', '--bool', 'core.ignorecase'] branch is master Importing new branch testing/master Opening pipe: ['p4', '-r', '3', '-G', 'changes', '//depot/testing/master/...@1,1048577'] Opening pipe: ['p4', '-r', '3', '-G', 'changes', '//depot/testing/master/...@1048578,1206098'] Resuming with change 1206099 parent determined through known branches: staging looking for initial parent for refs/remotes/p4/testing/master; current parent is refs/remotes/p4/testing/staging Creating temporary branch: refs/git-p4-tmp/1206099 commit into refs/git-p4-tmp/1206099 Reading pipe: ['git', 'config', '--bool', 'git-p4.keepEmptyCommits'] Opening pipe: ['p4', '-r', '3', '-G', '-x', '-', 'print'] //depot/testing/master/test1 --> test1 (0 MB) checkpoint finished: progress checkpoint Reading pipe: ['git', 'rev-list', '--reverse', '--no-merges', 'refs/remotes/p4/testing/staging'] fatal: ambiguous argument 'refs/remotes/p4/testing/staging': unknown revision or path not in the working tree. Use '--' to separate paths from revisions, like this: 'git <command> [<revision>...] -- [<file>...]' Traceback (most recent call last): File "/home/amiller/.bin/git-p4.py", line 4173, in <module> main() File "/home/amiller/.bin/git-p4.py", line 4167, in main if not cmd.run(args): File "/home/amiller/.bin/git-p4.py", line 3923, in run if not P4Sync.run(self, depotPaths): File "/home/amiller/.bin/git-p4.py", line 3790, in run self.importChanges(changes) File "/home/amiller/.bin/git-p4.py", line 3451, in importChanges blob = self.searchParent(parent, branch, tempBranch) File "/home/amiller/.bin/git-p4.py", line 3374, in searchParent "--no-merges", parent]): File "/home/amiller/.bin/git-p4.py", line 237, in read_pipe_lines die('Command failed: %s' % str(c)) File "/home/amiller/.bin/git-p4.py", line 165, in die raise Exception(msg) Exception: Command failed: ['git', 'rev-list', '--reverse', '--no-merges', 'refs/remotes/p4/testing/staging'] > Can you write a test case, or even just a shell script, that might > help figure out what's going on. No problem: #!/bin/bash # perforce setup - assumes PWD is mapped to //depot/... mkdir -p testing/master touch testing/master/test1 p4 add testing/master/test1 p4 submit -d 'test changelist 1' p4 integrate //depot/testing/master/... //depot/testing/staging/... p4 submit -d 'test changelist 2' touch testing/staging/test2 p4 add testing/staging/test2 p4 submit -d 'test changelist 3' p4 integrate //depot/testing/staging/... //depot/testing/master/... p4 submit -d 'test changelist 4' # clone with git-p4: git init p4_git_test cd p4_git_test git config git-p4.branchList master:staging git config --add git-p4.branchList staging:master git p4 clone //depot/testing/...@all --detect-branches --verbose . Thanks, Aaron