$ git clone -n https://src.fedoraproject.org/rpms/rust-cargo-util.git /var/lib/mock/f38-build-side-43-rust-devel-1398175-31077/root/chroot_tmpdir/scmroot/rust-cargo-util
Cloning into '/var/lib/mock/f38-build-side-43-rust-devel-1398175-31077/root/chroot_tmpdir/scmroot/rust-cargo-util'...
$ git fetch origin 718a9168ff8b4ad7912b6fd74c290c0c3ed5c558:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/rust-cargo-util
 * [new ref]         718a9168ff8b4ad7912b6fd74c290c0c3ed5c558 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 718a916 Update to version 0.2.6; Fixes RHBZ#2242664