$ git clone -n https://src.fedoraproject.org/rpms/vobcopy.git /var/lib/mock/f45-build-38171-722/root/chroot_tmpdir/scmroot/vobcopy
Cloning into '/var/lib/mock/f45-build-38171-722/root/chroot_tmpdir/scmroot/vobcopy'...
$ git fetch origin ba2760d2942f71fd0881d087eaf7defb9763bafd:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/vobcopy
 * [new ref]         ba2760d2942f71fd0881d087eaf7defb9763bafd -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at ba2760d Rebuilt for https://fedoraproject.org/wiki/Fedora_45_Mass_Rebuild