$ git clone -n http://git.inferitos.ru/rpms/firefox /var/lib/mock/inferit-9_3-updates-build-34240-65321/root/chroot_tmpdir/scmroot/firefox
Cloning into '/var/lib/mock/inferit-9_3-updates-build-34240-65321/root/chroot_tmpdir/scmroot/firefox'...
$ git fetch origin changed/i9/firefox-115.8.0-1.el9_3.inferit:KOJI_FETCH_HEAD
From http://git.inferitos.ru/rpms/firefox
 * [new tag]         changed/i9/firefox-115.8.0-1.el9_3.inferit -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at fcd62d0 import firefox-115.8.0-1.el9_3