$ git clone -n https://src.fedoraproject.org/rpms/rust-cargo-c.git /var/lib/mock/f41-build-side-1-2923663-34982/root/chroot_tmpdir/scmroot/rust-cargo-c
Cloning into '/var/lib/mock/f41-build-side-1-2923663-34982/root/chroot_tmpdir/scmroot/rust-cargo-c'...
$ git fetch origin 452b3fdacbd26b68db086ec2cd86db236de78dcb:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/rust-cargo-c
 * [new ref]         452b3fdacbd26b68db086ec2cd86db236de78dcb -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 452b3fd Bump itertools dependency from 0.12 to 0.13