$ git clone -n https://src.fedoraproject.org/rpms/rust-cargo-options.git /var/lib/mock/f40-build-1430244-23572/root/chroot_tmpdir/scmroot/rust-cargo-options
Cloning into '/var/lib/mock/f40-build-1430244-23572/root/chroot_tmpdir/scmroot/rust-cargo-options'...
$ git fetch origin 21f041ff1d5ed0be90ae66e33e2bda270a680252:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/rust-cargo-options
 * [new ref]         21f041ff1d5ed0be90ae66e33e2bda270a680252 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 21f041f Update to version 0.7.4; Fixes RHBZ#2275292