$ git clone -n https://src.fedoraproject.org/rpms/libminc.git /var/lib/mock/f42-build-864663-172514/root/chroot_tmpdir/scmroot/libminc
Cloning into '/var/lib/mock/f42-build-864663-172514/root/chroot_tmpdir/scmroot/libminc'...
$ git fetch origin 218bc64f922332b4480c46fd63d90edfcadfc8f6:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/libminc
 * [new ref]         218bc64f922332b4480c46fd63d90edfcadfc8f6 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 218bc64 Rebuild for hdf5 1.14.5