$ git clone -n https://src.fedoraproject.org/rpms/libklvanc.git /var/lib/mock/f45-build-16451-486/root/chroot_tmpdir/scmroot/libklvanc
Cloning into '/var/lib/mock/f45-build-16451-486/root/chroot_tmpdir/scmroot/libklvanc'...
$ git fetch origin 74dc2ce37c223e8bfd33ecae8ce75c0209b3bd42:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/libklvanc
 * [new ref]         74dc2ce37c223e8bfd33ecae8ce75c0209b3bd42 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 74dc2ce Rebuilt for https://fedoraproject.org/wiki/Fedora_45_Mass_Rebuild