$ git clone -n https://src.fedoraproject.org/rpms/OpenCTM.git /var/lib/mock/f41-build-846599-163131/root/chroot_tmpdir/scmroot/OpenCTM
Cloning into '/var/lib/mock/f41-build-846599-163131/root/chroot_tmpdir/scmroot/OpenCTM'...
$ git fetch origin ab8b57ddc73a688f1ccb34c38c09b5028bb2b80b:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/OpenCTM
 * [new ref]         ab8b57ddc73a688f1ccb34c38c09b5028bb2b80b -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at ab8b57d Fix failure to remove bundled tinyxml before building