$ git clone -n https://src.fedoraproject.org/rpms/chapel.git /var/lib/mock/f45-build-4196-330/root/chroot_tmpdir/scmroot/chapel
Cloning into '/var/lib/mock/f45-build-4196-330/root/chroot_tmpdir/scmroot/chapel'...
$ git fetch origin f6e46c9392076221a56ebbc0e5bbc4f9a2d6c663:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/chapel
 * [new ref]         f6e46c9392076221a56ebbc0e5bbc4f9a2d6c663 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at f6e46c9 Remove unused dependencies, fix rpath for libs and binaries