$ git clone -n http://git.inferitos.ru/rpms/mozjs52 /var/lib/mock/inferit-8_8-build-25281-43728/root/chroot_tmpdir/scmroot/mozjs52
Cloning into '/var/lib/mock/inferit-8_8-build-25281-43728/root/chroot_tmpdir/scmroot/mozjs52'...
$ git fetch origin changed/i8c/mozjs52-52.9.0-2.el8:KOJI_FETCH_HEAD
From http://git.inferitos.ru/rpms/mozjs52
 * [new tag]         changed/i8c/mozjs52-52.9.0-2.el8 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 6138f24 edit changelog for import mozjs52-52.9.0-2.el8