$ git clone -n https://src.fedoraproject.org/rpms/yaksa.git /var/lib/mock/f40-build-2158113-50939/root/chroot_tmpdir/scmroot/yaksa
Cloning into '/var/lib/mock/f40-build-2158113-50939/root/chroot_tmpdir/scmroot/yaksa'...
$ git fetch origin afb44312830b61532e028b93df7bc86615115aa8:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/yaksa
 * [new ref]         afb44312830b61532e028b93df7bc86615115aa8 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at afb4431 Add timeout for the %check invocation