$ git clone -n https://src.fedoraproject.org/rpms/yosyshq-abc.git /var/lib/mock/f39-build-1508901-35416/root/chroot_tmpdir/scmroot/yosyshq-abc
Cloning into '/var/lib/mock/f39-build-1508901-35416/root/chroot_tmpdir/scmroot/yosyshq-abc'...
$ git fetch origin 6c3470fb68761e9d0d547cd73ad95f31aac996d4:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/yosyshq-abc
 * [new ref]         6c3470fb68761e9d0d547cd73ad95f31aac996d4 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 6c3470f update to 0.34 snapshot