$ git clone -n https://src.fedoraproject.org/rpms/fontconfig.git /var/lib/mock/f40-build-2240491-53638/root/chroot_tmpdir/scmroot/fontconfig
Cloning into '/var/lib/mock/f40-build-2240491-53638/root/chroot_tmpdir/scmroot/fontconfig'...
$ git fetch origin d72678cc75d7591c03a69a97a55f6452eb32fcfb:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/fontconfig
 * [new ref]         d72678cc75d7591c03a69a97a55f6452eb32fcfb -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at d72678c New upstream release.