$ git clone -n https://src.fedoraproject.org/rpms/rust-cargo-util.git /var/lib/mock/f40-build-1942349-25164/root/chroot_tmpdir/scmroot/rust-cargo-util
Cloning into '/var/lib/mock/f40-build-1942349-25164/root/chroot_tmpdir/scmroot/rust-cargo-util'...
$ git fetch origin 66b463bbed2a18c92e65b7371c5924693cb6a226:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/rust-cargo-util
 * [new ref]         66b463bbed2a18c92e65b7371c5924693cb6a226 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 66b463b Update to version 0.2.13; Fixes RHBZ#2299856