$ git clone -n https://src.fedoraproject.org/rpms/rust-uu_factor.git /var/lib/mock/f42-build-3253766-41225/root/chroot_tmpdir/scmroot/rust-uu_factor
Cloning into '/var/lib/mock/f42-build-3253766-41225/root/chroot_tmpdir/scmroot/rust-uu_factor'...
$ git fetch origin 9b921448216f32fe4cf6c2b0cdb78e3d76fa1fd8:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/rust-uu_factor
 * [new ref]         9b921448216f32fe4cf6c2b0cdb78e3d76fa1fd8 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 9b92144 Rebuilt for https://fedoraproject.org/wiki/Fedora_42_Mass_Rebuild