$ git clone -n https://src.fedoraproject.org/rpms/regionset.git /var/lib/mock/f39-build-1456659-32926/root/chroot_tmpdir/scmroot/regionset
Cloning into '/var/lib/mock/f39-build-1456659-32926/root/chroot_tmpdir/scmroot/regionset'...
$ git fetch origin 942b938a4e8f664dc60c3dc34725639fdabc6fe5:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/regionset
 * [new ref]         942b938a4e8f664dc60c3dc34725639fdabc6fe5 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 942b938 Rebuilt for https://fedoraproject.org/wiki/Fedora_39_Mass_Rebuild