$ git clone -n https://src.fedoraproject.org/rpms/koko.git /var/lib/mock/f41-build-857603-168142/root/chroot_tmpdir/scmroot/koko
Cloning into '/var/lib/mock/f41-build-857603-168142/root/chroot_tmpdir/scmroot/koko'...
$ git fetch origin 6d0552888debc8ff77d024f7c91640989b7b8f47:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/koko
 * [new ref]         6d0552888debc8ff77d024f7c91640989b7b8f47 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 6d05528 24.08.2