$ git clone -n http://git.inferitos.ru/rpms/imath /var/lib/mock/inferit-9_4-aarch64-bootstrap-build-56782-126526/root/chroot_tmpdir/scmroot/imath
Cloning into '/var/lib/mock/inferit-9_4-aarch64-bootstrap-build-56782-126526/root/chroot_tmpdir/scmroot/imath'...
$ git fetch origin changed/i9c/imath-3.1.2-1.el9:KOJI_FETCH_HEAD
From http://git.inferitos.ru/rpms/imath
 * [new tag]         changed/i9c/imath-3.1.2-1.el9 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 86f8605 import imath-3.1.2-1.el9