$ git clone -n https://src.fedoraproject.org/rpms/gnome-desktop-testing.git /var/lib/mock/f41-build-1020952-18021/root/chroot_tmpdir/scmroot/gnome-desktop-testing
Cloning into '/var/lib/mock/f41-build-1020952-18021/root/chroot_tmpdir/scmroot/gnome-desktop-testing'...
$ git fetch origin ada3850ac11f18e0a65c59c66293de7b5cdf3a4c:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/gnome-desktop-testing
 * [new ref]         ada3850ac11f18e0a65c59c66293de7b5cdf3a4c -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at ada3850 Rebuilt for https://fedoraproject.org/wiki/Fedora_40_Mass_Rebuild