$ git clone -n https://src.fedoraproject.org/rpms/cfitsio.git /var/lib/mock/f42-build-side-1-3498096-45961/root/chroot_tmpdir/scmroot/cfitsio
Cloning into '/var/lib/mock/f42-build-side-1-3498096-45961/root/chroot_tmpdir/scmroot/cfitsio'...
$ git fetch origin 1e2e6e3a697a0f92f7915d5633d77101fea076bd:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/cfitsio
 * [new ref]         1e2e6e3a697a0f92f7915d5633d77101fea076bd -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 1e2e6e3 New upstream v4.6.0