$ git clone -n https://src.fedoraproject.org/rpms/golang-github-hebcal-greg.git /var/lib/mock/f39-build-1512843-35576/root/chroot_tmpdir/scmroot/golang-github-hebcal-greg
Cloning into '/var/lib/mock/f39-build-1512843-35576/root/chroot_tmpdir/scmroot/golang-github-hebcal-greg'...
$ git fetch origin fbafda6283ebd7ec48ba5d8b63c6e26e10599be0:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/golang-github-hebcal-greg
 * [new ref]         fbafda6283ebd7ec48ba5d8b63c6e26e10599be0 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at fbafda6 Rebuilt for https://fedoraproject.org/wiki/Fedora_39_Mass_Rebuild