$ git clone -n https://src.fedoraproject.org/rpms/python-repomd.git /var/lib/mock/f45-build-32708-661/root/chroot_tmpdir/scmroot/python-repomd
Cloning into '/var/lib/mock/f45-build-32708-661/root/chroot_tmpdir/scmroot/python-repomd'...
$ git fetch origin 7f0cbd862114ba696accb262e60f8d59d9d34f59:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/python-repomd
 * [new ref]         7f0cbd862114ba696accb262e60f8d59d9d34f59 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 7f0cbd8 Rebuilt for https://fedoraproject.org/wiki/Fedora_45_Mass_Rebuild