$ git clone -n https://src.fedoraproject.org/rpms/amg4psblas.git /var/lib/mock/f40-build-2216948-52529/root/chroot_tmpdir/scmroot/amg4psblas
Cloning into '/var/lib/mock/f40-build-2216948-52529/root/chroot_tmpdir/scmroot/amg4psblas'...
$ git fetch origin 78fd44f9f5d0abe08b40f8999d8ce22fd61316b4:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/amg4psblas
 * [new ref]         78fd44f9f5d0abe08b40f8999d8ce22fd61316b4 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 78fd44f Rebuild for MUMPS-5.6.2