$ git clone -n https://src.fedoraproject.org/rpms/libuninum.git /var/lib/mock/f45-build-17169-496/root/chroot_tmpdir/scmroot/libuninum
Cloning into '/var/lib/mock/f45-build-17169-496/root/chroot_tmpdir/scmroot/libuninum'...
$ git fetch origin 793fab30ff1dae34d1a8ede720764ff46c8c5fa6:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/libuninum
 * [new ref]         793fab30ff1dae34d1a8ede720764ff46c8c5fa6 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 793fab3 Rebuilt for https://fedoraproject.org/wiki/Fedora_45_Mass_Rebuild