$ git clone -n https://src.fedoraproject.org/rpms/gtk4.git /var/lib/mock/f40-build-787470-134776/root/chroot_tmpdir/scmroot/gtk4
Cloning into '/var/lib/mock/f40-build-787470-134776/root/chroot_tmpdir/scmroot/gtk4'...
$ git fetch origin 2ab7953251a408d93b3ba346bcd5bf6a4b81ac37:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/gtk4
 * [new ref]         2ab7953251a408d93b3ba346bcd5bf6a4b81ac37 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 2ab7953 Backport MR #6927 to fix gnome-text-editor crash