$ git clone -n https://src.fedoraproject.org/rpms/kgamma.git /var/lib/mock/f39-build-1503278-34965/root/chroot_tmpdir/scmroot/kgamma
Cloning into '/var/lib/mock/f39-build-1503278-34965/root/chroot_tmpdir/scmroot/kgamma'...
$ git fetch origin 3236de9fa20300081016ea97353a68ced8c5ce70:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/kgamma
 * [new ref]         3236de9fa20300081016ea97353a68ced8c5ce70 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 3236de9 Update to 5.27.8