$ git clone -n https://src.fedoraproject.org/rpms/startdde.git /var/lib/mock/f41-build-844340-162501/root/chroot_tmpdir/scmroot/startdde
Cloning into '/var/lib/mock/f41-build-844340-162501/root/chroot_tmpdir/scmroot/startdde'...
$ git fetch origin 4486a71aa4fc5dfffacd156e9abc7debe2c99ac0:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/startdde
 * [new ref]         4486a71aa4fc5dfffacd156e9abc7debe2c99ac0 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 4486a71 6.0.15