$ git clone -n https://src.fedoraproject.org/rpms/lib765.git /var/lib/mock/f45-build-15723-478/root/chroot_tmpdir/scmroot/lib765
Cloning into '/var/lib/mock/f45-build-15723-478/root/chroot_tmpdir/scmroot/lib765'...
$ git fetch origin 046db6f73e4103306e2248b1f19ebc734bf3f51a:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/lib765
 * [new ref]         046db6f73e4103306e2248b1f19ebc734bf3f51a -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 046db6f Rebuilt for https://fedoraproject.org/wiki/Fedora_45_Mass_Rebuild