$ git clone -n https://src.fedoraproject.org/rpms/libmediainfo.git /var/lib/mock/f45-build-16541-487/root/chroot_tmpdir/scmroot/libmediainfo
Cloning into '/var/lib/mock/f45-build-16541-487/root/chroot_tmpdir/scmroot/libmediainfo'...
$ git fetch origin a7b48acd0af37adabd5863784614361292e00bf8:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/libmediainfo
 * [new ref]         a7b48acd0af37adabd5863784614361292e00bf8 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at a7b48ac Rebuilt for https://fedoraproject.org/wiki/Fedora_45_Mass_Rebuild