$ git clone -n https://src.fedoraproject.org/rpms/oksh.git /var/lib/mock/f40-build-2243149-53669/root/chroot_tmpdir/scmroot/oksh
Cloning into '/var/lib/mock/f40-build-2243149-53669/root/chroot_tmpdir/scmroot/oksh'...
$ git fetch origin 19115f6fcc984fdd8d96cb7810a210c20135c234:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/oksh
 * [new ref]         19115f6fcc984fdd8d96cb7810a210c20135c234 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 19115f6 Update oksh to 7.4