$ git clone -n https://src.fedoraproject.org/rpms/libXext.git /var/lib/mock/f40-build-2295657-56336/root/chroot_tmpdir/scmroot/libXext
Cloning into '/var/lib/mock/f40-build-2295657-56336/root/chroot_tmpdir/scmroot/libXext'...
$ git fetch origin 104724ee57773a1781c966950072b3600578d45c:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/libXext
 * [new ref]         104724ee57773a1781c966950072b3600578d45c -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 104724e Rebuilt for https://fedoraproject.org/wiki/Fedora_40_Mass_Rebuild