$ git clone -n https://src.fedoraproject.org/rpms/alligator.git /var/lib/mock/f40-build-2250401-54049/root/chroot_tmpdir/scmroot/alligator
Cloning into '/var/lib/mock/f40-build-2250401-54049/root/chroot_tmpdir/scmroot/alligator'...
$ git fetch origin e7d476b5ac7447616c8c3de41402f12272c8e700:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/alligator
 * [new ref]         e7d476b5ac7447616c8c3de41402f12272c8e700 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at e7d476b 24.01.90