$ git clone -n https://src.fedoraproject.org/rpms/gmsh.git /var/lib/mock/f42-build-864751-172559/root/chroot_tmpdir/scmroot/gmsh
Cloning into '/var/lib/mock/f42-build-864751-172559/root/chroot_tmpdir/scmroot/gmsh'...
$ git fetch origin a0652c93e2cde0a2b77fe5917b7b68bc4a2452c1:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/gmsh
 * [new ref]         a0652c93e2cde0a2b77fe5917b7b68bc4a2452c1 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at a0652c9 Rebuild for hdf5 1.14.5