04-Sep-2026 03:08:36: building syzkaller on d1b870e1003b52891d2196c1e2ee42fe905010ba...
04-Sep-2026 03:09:19: fetching kernel...
04-Sep-2026 03:09:22: failed to checkout kernel: failed to checkout kernel repo git://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/master: failed to run ["git" "-c" "core.hooksPath=/dev/null" "checkout" "FETCH_HEAD" "--force"]: exit status 128
Previous HEAD position was 8ab1afb2eb246 Merge tag 'for-7.3/dm-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/device-mapper/linux-dm
fatal: update_ref failed for ref 'HEAD': cannot lock ref 'HEAD': Unable to create '/syzkaller/jobs/linux/kernel/.git/HEAD.lock': File exists.

Another git process seems to be running in this repository, e.g.
an editor opened by 'git commit'. Please make sure all processes
are terminated then try again. If it still fails, a git process
may have crashed in this repository earlier:
remove the file manually to continue.