$ git clone -n https://src.fedoraproject.org/rpms/ghc-gi-glib.git /var/lib/mock/f39-build-1714042-41228/root/chroot_tmpdir/scmroot/ghc-gi-glib
Cloning into '/var/lib/mock/f39-build-1714042-41228/root/chroot_tmpdir/scmroot/ghc-gi-glib'...
$ git fetch origin fd30291afb7c0b76c76116fa4351964261b690b6:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/ghc-gi-glib
 * [new ref]         fd30291afb7c0b76c76116fa4351964261b690b6 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at fd30291 https://hackage.haskell.org/package/gi-glib-2.0.29/changelog