$ git clone -n https://src.fedoraproject.org/rpms/mojo-executor.git /var/lib/mock/f39-build-2173686-51065/root/chroot_tmpdir/scmroot/mojo-executor
Cloning into '/var/lib/mock/f39-build-2173686-51065/root/chroot_tmpdir/scmroot/mojo-executor'...
$ git fetch origin 31277565f2faac77d8dc6d767513a2358f85aa92:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/mojo-executor
 * [new ref]         31277565f2faac77d8dc6d767513a2358f85aa92 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 3127756 Bring back the ant-contrib dependency