$ git clone -n https://git.cclinux.org/stage/rpms/firefox.git /var/lib/mock/dist-circle8-update-firefox-build-118820-82526/root/chroot_tmpdir/scmroot/firefox
Cloning into '/var/lib/mock/dist-circle8-update-firefox-build-118820-82526/root/chroot_tmpdir/scmroot/firefox'...
$ git fetch origin f6166d4a4f3aa6c8542d79fda1de811ee2405777:KOJI_FETCH_HEAD
From https://git.cclinux.org/stage/rpms/firefox
 * [new ref]         f6166d4a4f3aa6c8542d79fda1de811ee2405777 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at f6166d4 import firefox-128.4.0-1.el8_10