$ git clone -n https://src.fedoraproject.org/rpms/harfbuzz.git /var/lib/mock/f45-build-13318-449/root/chroot_tmpdir/scmroot/harfbuzz
Cloning into '/var/lib/mock/f45-build-13318-449/root/chroot_tmpdir/scmroot/harfbuzz'...
$ git fetch origin 96840f00a5dd2271eceb0b8287d416891a7ba07a:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/harfbuzz
 * [new ref]         96840f00a5dd2271eceb0b8287d416891a7ba07a -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 96840f0 Update to 14.5.0 version (#2537300)