$ git clone -n https://src.fedoraproject.org/rpms/python-hatch-vcs.git /var/lib/mock/f45-build-39481-735/root/chroot_tmpdir/scmroot/python-hatch-vcs
Cloning into '/var/lib/mock/f45-build-39481-735/root/chroot_tmpdir/scmroot/python-hatch-vcs'...
$ git fetch origin 6fd3ac2913e7e43fde83023bc7e09f59ef63fdfb:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/python-hatch-vcs
 * [new ref]         6fd3ac2913e7e43fde83023bc7e09f59ef63fdfb -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 6fd3ac2 Rebuilt for https://fedoraproject.org/wiki/Fedora_45_Mass_Rebuild