$ git clone -n https://src.fedoraproject.org/rpms/pidgin.git /var/lib/mock/f39-build-1566579-37590/root/chroot_tmpdir/scmroot/pidgin
Cloning into '/var/lib/mock/f39-build-1566579-37590/root/chroot_tmpdir/scmroot/pidgin'...
$ git fetch origin 073adaa79ef38c833ab567b46b26eb7b776bb4a3:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/pidgin
 * [new ref]         073adaa79ef38c833ab567b46b26eb7b776bb4a3 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 073adaa Rebuilt for https://fedoraproject.org/wiki/Fedora_39_Mass_Rebuild