$ git clone -n https://src.fedoraproject.org/rpms/plasma-disks.git /var/lib/mock/f40-build-1495480-23854/root/chroot_tmpdir/scmroot/plasma-disks
Cloning into '/var/lib/mock/f40-build-1495480-23854/root/chroot_tmpdir/scmroot/plasma-disks'...
$ git fetch origin 96d86e7d7ca7eff83bc53348bff4d01970204065:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/plasma-disks
 * [new ref]         96d86e7d7ca7eff83bc53348bff4d01970204065 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 96d86e7 6.1.2