$ git clone -n https://src.fedoraproject.org/rpms/calamaris.git /var/lib/mock/f41-build-830427-14803/root/chroot_tmpdir/scmroot/calamaris
Cloning into '/var/lib/mock/f41-build-830427-14803/root/chroot_tmpdir/scmroot/calamaris'...
$ git fetch origin ad70b240c304f4c7973402abbbd8ffcdf9482323:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/calamaris
 * [new ref]         ad70b240c304f4c7973402abbbd8ffcdf9482323 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at ad70b24 Eliminate use of obsolete %patchN syntax (#2283636)