$ git clone -n https://src.fedoraproject.org/rpms/toga2.git /var/lib/mock/f45-build-37258-712/root/chroot_tmpdir/scmroot/toga2
Cloning into '/var/lib/mock/f45-build-37258-712/root/chroot_tmpdir/scmroot/toga2'...
$ git fetch origin 01e08d9d6b7d025b77bcf4bd01544e8ad1bf74cd:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/toga2
 * [new ref]         01e08d9d6b7d025b77bcf4bd01544e8ad1bf74cd -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 01e08d9 Rebuilt for https://fedoraproject.org/wiki/Fedora_45_Mass_Rebuild