$ git clone -n https://src.fedoraproject.org/rpms/otter-browser.git /var/lib/mock/f40-build-2180079-51101/root/chroot_tmpdir/scmroot/otter-browser
Cloning into '/var/lib/mock/f40-build-2180079-51101/root/chroot_tmpdir/scmroot/otter-browser'...
$ git fetch origin 0eaf90de52b490e4637a2b29808f769e2a47b419:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/otter-browser
 * [new ref]         0eaf90de52b490e4637a2b29808f769e2a47b419 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 0eaf90d Rebuilt for https://fedoraproject.org/wiki/Fedora_39_Mass_Rebuild