$ git clone -n https://src.fedoraproject.org/rpms/rust-vt100.git /var/lib/mock/f40-build-2233261-53367/root/chroot_tmpdir/scmroot/rust-vt100
Cloning into '/var/lib/mock/f40-build-2233261-53367/root/chroot_tmpdir/scmroot/rust-vt100'...
$ git fetch origin 75a4d0abe3ea3fbf72dbcf8bd3cac04ce5d1671c:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/rust-vt100
 * [new ref]         75a4d0abe3ea3fbf72dbcf8bd3cac04ce5d1671c -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 75a4d0a Rebuilt for vte 0.13