$ git clone -n https://src.fedoraproject.org/rpms/bless.git /var/lib/mock/f38-build-side-42-init-devel-883900-28488/root/chroot_tmpdir/scmroot/bless
Cloning into '/var/lib/mock/f38-build-side-42-init-devel-883900-28488/root/chroot_tmpdir/scmroot/bless'...
$ git fetch origin ea275fad4ab39481149dcf9bf9b93fa0d3f52294:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/bless
 * [new ref]         ea275fad4ab39481149dcf9bf9b93fa0d3f52294 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at ea275fa Rebuilt for https://fedoraproject.org/wiki/Fedora_38_Mass_Rebuild