$ git clone -n https://git.cclinux.org/stage/rpms/firefox.git /mnt/compose/mock/dist-circle8-update-firefox-build-92378-38877/root/chroot_tmpdir/scmroot/firefox
Cloning into '/mnt/compose/mock/dist-circle8-update-firefox-build-92378-38877/root/chroot_tmpdir/scmroot/firefox'...
$ git fetch origin f5108a3bd6efe9d23569e47eed887416acaa8901:KOJI_FETCH_HEAD
From https://git.cclinux.org/stage/rpms/firefox
 * [new ref]         f5108a3bd6efe9d23569e47eed887416acaa8901 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at f5108a3 import firefox-102.7.0-1.el8_7