$ git clone -n https://git.cclinux.org/stage/rpms/thunderbird.git /var/lib/mock/dist-circle8-update-firefox-build-112236-70137/root/chroot_tmpdir/scmroot/thunderbird
Cloning into '/var/lib/mock/dist-circle8-update-firefox-build-112236-70137/root/chroot_tmpdir/scmroot/thunderbird'...
$ git fetch origin ff6b97c34e223d0c79f4c547a35922cf829af2da:KOJI_FETCH_HEAD
From https://git.cclinux.org/stage/rpms/thunderbird
 * [new ref]         ff6b97c34e223d0c79f4c547a35922cf829af2da -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at ff6b97c import thunderbird-115.9.0-1.el8_9