$ git clone -n https://src.fedoraproject.org/rpms/gnome-desktop-testing.git /var/lib/mock/f42-build-3275545-41321/root/chroot_tmpdir/scmroot/gnome-desktop-testing
Cloning into '/var/lib/mock/f42-build-3275545-41321/root/chroot_tmpdir/scmroot/gnome-desktop-testing'...
$ git fetch origin c7c330f11f10967705e49270f9dcddd4ae63d643:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/gnome-desktop-testing
 * [new ref]         c7c330f11f10967705e49270f9dcddd4ae63d643 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at c7c330f Rebuilt for https://fedoraproject.org/wiki/Fedora_42_Mass_Rebuild