$ git clone -n https://src.fedoraproject.org/rpms/ghc-gi-gio.git /var/lib/mock/f39-build-2097599-50435/root/chroot_tmpdir/scmroot/ghc-gi-gio
Cloning into '/var/lib/mock/f39-build-2097599-50435/root/chroot_tmpdir/scmroot/ghc-gi-gio'...
$ git fetch origin 6575dc68e7f27fb0cd34baf499bffbf08f6c7c32:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/ghc-gi-gio
 * [new ref]         6575dc68e7f27fb0cd34baf499bffbf08f6c7c32 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 6575dc6 https://hackage.haskell.org/package/gi-gio-2.0.32/changelog