$ git clone -n https://src.fedoraproject.org/rpms/ghc-gi-gdk4.git /var/lib/mock/f45-build-10322-415/root/chroot_tmpdir/scmroot/ghc-gi-gdk4
Cloning into '/var/lib/mock/f45-build-10322-415/root/chroot_tmpdir/scmroot/ghc-gi-gdk4'...
$ git fetch origin d324220b7a0eb1e896e2b3c59c6909100dcbd456:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/ghc-gi-gdk4
 * [new ref]         d324220b7a0eb1e896e2b3c59c6909100dcbd456 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at d324220 Rebuilt for https://fedoraproject.org/wiki/Fedora_45_Mass_Rebuild