$ git clone -n https://src.fedoraproject.org/rpms/gprolog.git /var/lib/mock/f42-build-3347452-45004/root/chroot_tmpdir/scmroot/gprolog
Cloning into '/var/lib/mock/f42-build-3347452-45004/root/chroot_tmpdir/scmroot/gprolog'...
$ git fetch origin 0f48d23c48be18fa84667f0bc35cfcf1c0cbd3fb:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/gprolog
 * [new ref]         0f48d23c48be18fa84667f0bc35cfcf1c0cbd3fb -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 0f48d23 Build with `-std=gnu17` as C23 is not supported yet