$ git clone -n https://src.fedoraproject.org/rpms/python-pyrpmmd.git /var/lib/mock/f45-build-32388-659/root/chroot_tmpdir/scmroot/python-pyrpmmd
Cloning into '/var/lib/mock/f45-build-32388-659/root/chroot_tmpdir/scmroot/python-pyrpmmd'...
$ git fetch origin 7a7a1bc24faed52dc3b3a0abfd1c3fb6b4f306a7:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/python-pyrpmmd
 * [new ref]         7a7a1bc24faed52dc3b3a0abfd1c3fb6b4f306a7 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 7a7a1bc Rebuilt for https://fedoraproject.org/wiki/Fedora_45_Mass_Rebuild