$ git clone -n https://src.fedoraproject.org/rpms/golang-github-vividcortex-gohistogram.git /var/lib/mock/f45-build-12587-442/root/chroot_tmpdir/scmroot/golang-github-vividcortex-gohistogram
Cloning into '/var/lib/mock/f45-build-12587-442/root/chroot_tmpdir/scmroot/golang-github-vividcortex-gohistogram'...
$ git fetch origin aff45d2803297bbfd92183cac32c5e5f65d8d09b:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/golang-github-vividcortex-gohistogram
 * [new ref]         aff45d2803297bbfd92183cac32c5e5f65d8d09b -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at aff45d2 Rebuilt for https://fedoraproject.org/wiki/Fedora_45_Mass_Rebuild