$ git clone -n https://src.fedoraproject.org/rpms/rust-ixdtf.git /var/lib/mock/f45-build-42742-796/root/chroot_tmpdir/scmroot/rust-ixdtf
Cloning into '/var/lib/mock/f45-build-42742-796/root/chroot_tmpdir/scmroot/rust-ixdtf'...
$ git fetch origin 70fe316ed12d989201150b4800f6996ce54f4fbb:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/rust-ixdtf
 * [new ref]         70fe316ed12d989201150b4800f6996ce54f4fbb -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 70fe316 Update to version 0.6.6; Fixes RHBZ#2515902