$ git clone -n https://src.fedoraproject.org/rpms/fontconfig.git /var/lib/mock/f41-build-842315-161585/root/chroot_tmpdir/scmroot/fontconfig
Cloning into '/var/lib/mock/f41-build-842315-161585/root/chroot_tmpdir/scmroot/fontconfig'...
$ git fetch origin c6712606928e77b5a59599e704cbf302296c03fe:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/fontconfig
 * [new ref]         c6712606928e77b5a59599e704cbf302296c03fe -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at c671260 Fix a memory leak and potentially uninitialized values.