$ git clone -n https://src.fedoraproject.org/rpms/R-digest.git /var/lib/mock/f40-build-789364-135728/root/chroot_tmpdir/scmroot/R-digest
Cloning into '/var/lib/mock/f40-build-789364-135728/root/chroot_tmpdir/scmroot/R-digest'...
$ git fetch origin 8407c8b6424edafb41bd4f5aec33299bd27accda:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/R-digest
 * [new ref]         8407c8b6424edafb41bd4f5aec33299bd27accda -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 8407c8b Rebuilt for https://fedoraproject.org/wiki/Fedora_40_Mass_Rebuild