04-Sep-2026 05:15:15: building syzkaller on 1e72964b0111319984575e60f266d1fa0a98abb5...
04-Sep-2026 05:15:38: fetching kernel...
04-Sep-2026 05:15:41: 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.