$ git clone -n https://src.fedoraproject.org/rpms/observable.git /var/lib/mock/f40-build-794801-139790/root/chroot_tmpdir/scmroot/observable
Cloning into '/var/lib/mock/f40-build-794801-139790/root/chroot_tmpdir/scmroot/observable'...
$ git fetch origin 7cbf6c3d8187980aecba559262889cad6dfe7c45:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/observable
 * [new ref]         7cbf6c3d8187980aecba559262889cad6dfe7c45 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 7cbf6c3 Rebuilt for https://fedoraproject.org/wiki/Fedora_40_Mass_Rebuild