$ git clone -n https://src.fedoraproject.org/rpms/ghc-gi-glib.git /var/lib/mock/f38-build-side-42-init-devel-1094206-30068/root/chroot_tmpdir/scmroot/ghc-gi-glib
Cloning into '/var/lib/mock/f38-build-side-42-init-devel-1094206-30068/root/chroot_tmpdir/scmroot/ghc-gi-glib'...
$ git fetch origin d18beab61f36496c51285080887f0be0938e0280:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/ghc-gi-glib
 * [new ref]         d18beab61f36496c51285080887f0be0938e0280 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at d18beab rebuild