$ git clone -n https://src.fedoraproject.org/rpms/libgnomecanvas.git /var/lib/mock/f40-build-2294179-56255/root/chroot_tmpdir/scmroot/libgnomecanvas
Cloning into '/var/lib/mock/f40-build-2294179-56255/root/chroot_tmpdir/scmroot/libgnomecanvas'...
$ git fetch origin 7673d6cdca44ef0d6fbcc41cbd8ea832a65ecadd:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/libgnomecanvas
 * [new ref]         7673d6cdca44ef0d6fbcc41cbd8ea832a65ecadd -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 7673d6c Rebuilt for https://fedoraproject.org/wiki/Fedora_40_Mass_Rebuild