$ git clone -n https://src.fedoraproject.org/rpms/rust-unicode-width.git /var/lib/mock/f39-build-1445555-32653/root/chroot_tmpdir/scmroot/rust-unicode-width
Cloning into '/var/lib/mock/f39-build-1445555-32653/root/chroot_tmpdir/scmroot/rust-unicode-width'...
$ git fetch origin 6a311009be4b14ae11b470b0ecd7a9d9b6a93688:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/rust-unicode-width
 * [new ref]         6a311009be4b14ae11b470b0ecd7a9d9b6a93688 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 6a31100 Update to version 0.1.11; Fixes RHBZ#2239701