$ git clone -n https://src.fedoraproject.org/rpms/harfbuzz.git /var/lib/mock/f40-build-2613729-64090/root/chroot_tmpdir/scmroot/harfbuzz
Cloning into '/var/lib/mock/f40-build-2613729-64090/root/chroot_tmpdir/scmroot/harfbuzz'...
$ git fetch origin a7706f95a7e38cf3ebd98a9a13adb681a5d1afdb:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/harfbuzz
 * [new ref]         a7706f95a7e38cf3ebd98a9a13adb681a5d1afdb -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at a7706f9 Update to 8.3.1 version (#2270012)