$ git clone -n https://src.fedoraproject.org/rpms/koko.git /var/lib/mock/f39-build-1834362-41910/root/chroot_tmpdir/scmroot/koko
Cloning into '/var/lib/mock/f39-build-1834362-41910/root/chroot_tmpdir/scmroot/koko'...
$ git fetch origin 8177d8058f2275c4147d391202da605e4b9f8b9c:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/koko
 * [new ref]         8177d8058f2275c4147d391202da605e4b9f8b9c -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 8177d80 23.08.3