$ git clone -n https://src.fedoraproject.org/rpms/root.git /var/lib/mock/f41-build-717216-13077/root/chroot_tmpdir/scmroot/root
Cloning into '/var/lib/mock/f41-build-717216-13077/root/chroot_tmpdir/scmroot/root'...
$ git fetch origin 4d9bac38913ea0c73ef57610b910aa09bd579004:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/root
 * [new ref]         4d9bac38913ea0c73ef57610b910aa09bd579004 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 4d9bac3 Rebuilt for libarrow.so.1601 Improved fontconfig support