$ git clone -n https://src.fedoraproject.org/rpms/python-prometheus_client.git /var/lib/mock/f45-build-32153-657/root/chroot_tmpdir/scmroot/python-prometheus_client
Cloning into '/var/lib/mock/f45-build-32153-657/root/chroot_tmpdir/scmroot/python-prometheus_client'...
$ git fetch origin 3bbd25d484d4c1f73d5c65e947b70a78f9669929:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/python-prometheus_client
 * [new ref]         3bbd25d484d4c1f73d5c65e947b70a78f9669929 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 3bbd25d Rebuilt for https://fedoraproject.org/wiki/Fedora_45_Mass_Rebuild