$ git clone -n https://src.fedoraproject.org/rpms/libHX.git /var/lib/mock/f45-build-15737-478/root/chroot_tmpdir/scmroot/libHX
Cloning into '/var/lib/mock/f45-build-15737-478/root/chroot_tmpdir/scmroot/libHX'...
$ git fetch origin c99e81fdfdb302becc4e5ea093266aaa8fdcb92f:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/libHX
 * [new ref]         c99e81fdfdb302becc4e5ea093266aaa8fdcb92f -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at c99e81f Rebuilt for https://fedoraproject.org/wiki/Fedora_45_Mass_Rebuild