$ git clone -n https://src.fedoraproject.org/rpms/ghc-gi-gtk.git /var/lib/mock/f38-build-side-42-init-devel-690756-26824/root/chroot_tmpdir/scmroot/ghc-gi-gtk
Cloning into '/var/lib/mock/f38-build-side-42-init-devel-690756-26824/root/chroot_tmpdir/scmroot/ghc-gi-gtk'...
$ git fetch origin 877e53d0a82b3d8a0ecfe0a245c60694576e1e89:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/ghc-gi-gtk
 * [new ref]         877e53d0a82b3d8a0ecfe0a245c60694576e1e89 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 877e53d Convert to %autorelease and %autochangelog