$ git clone -n https://src.fedoraproject.org/rpms/dcw-gmt.git /var/lib/mock/f39-build-1458001-33031/root/chroot_tmpdir/scmroot/dcw-gmt
Cloning into '/var/lib/mock/f39-build-1458001-33031/root/chroot_tmpdir/scmroot/dcw-gmt'...
$ git fetch origin cbcfd75c51019ff7ccb5737598ce045ea7635b84:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/dcw-gmt
 * [new ref]         cbcfd75c51019ff7ccb5737598ce045ea7635b84 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at cbcfd75 Update to 2.1.2