$ git clone -n https://src.fedoraproject.org/rpms/coccinelle.git /var/lib/mock/f40-build-2442428-61030/root/chroot_tmpdir/scmroot/coccinelle
Cloning into '/var/lib/mock/f40-build-2442428-61030/root/chroot_tmpdir/scmroot/coccinelle'...
$ git fetch origin 4377d803f0fe5db39de8b51b10cde419f6829819:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/coccinelle
 * [new ref]         4377d803f0fe5db39de8b51b10cde419f6829819 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 4377d80 Bump and rebuild