$ git clone -n https://src.fedoraproject.org/rpms/golang-github-eclesh-welford.git /var/lib/mock/f39-build-1503962-34995/root/chroot_tmpdir/scmroot/golang-github-eclesh-welford
Cloning into '/var/lib/mock/f39-build-1503962-34995/root/chroot_tmpdir/scmroot/golang-github-eclesh-welford'...
$ git fetch origin 8bceb2cfea97a597e524bf4c6522d0255502243a:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/golang-github-eclesh-welford
 * [new ref]         8bceb2cfea97a597e524bf4c6522d0255502243a -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 8bceb2c Rebuilt for https://fedoraproject.org/wiki/Fedora_39_Mass_Rebuild