$ git clone -n https://src.fedoraproject.org/rpms/rubygem-hitimes.git /var/lib/mock/f45-build-34978-692/root/chroot_tmpdir/scmroot/rubygem-hitimes
Cloning into '/var/lib/mock/f45-build-34978-692/root/chroot_tmpdir/scmroot/rubygem-hitimes'...
$ git fetch origin 6a12d17eebc20eee736e902446166c878845ec89:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/rubygem-hitimes
 * [new ref]         6a12d17eebc20eee736e902446166c878845ec89 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 6a12d17 Rebuilt for https://fedoraproject.org/wiki/Fedora_45_Mass_Rebuild