$ git clone -n https://src.fedoraproject.org/rpms/ghc-gi-harfbuzz.git /var/lib/mock/f38-build-side-42-init-devel-596022-26162/root/chroot_tmpdir/scmroot/ghc-gi-harfbuzz
Cloning into '/var/lib/mock/f38-build-side-42-init-devel-596022-26162/root/chroot_tmpdir/scmroot/ghc-gi-harfbuzz'...
$ git fetch origin 52cafcbc08f6d1a247bf553da4253dcd9aa70e56:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/ghc-gi-harfbuzz
 * [new ref]         52cafcbc08f6d1a247bf553da4253dcd9aa70e56 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 52cafcb subpackage gi-freetype2