$ git clone -n https://src.fedoraproject.org/rpms/commit-stream.git /var/lib/mock/f38-build-side-42-init-devel-726292-27325/root/chroot_tmpdir/scmroot/commit-stream
Cloning into '/var/lib/mock/f38-build-side-42-init-devel-726292-27325/root/chroot_tmpdir/scmroot/commit-stream'...
$ git fetch origin 5c9f97296396177b9706bb16a898ce54ce1f4881:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/commit-stream
 * [new ref]         5c9f97296396177b9706bb16a898ce54ce1f4881 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 5c9f972 Rebuilt for https://fedoraproject.org/wiki/Fedora_38_Mass_Rebuild