$ git clone -n https://src.fedoraproject.org/rpms/rust-nu-protocol.git /var/lib/mock/f41-build-side-1-3137376-39794/root/chroot_tmpdir/scmroot/rust-nu-protocol
Cloning into '/var/lib/mock/f41-build-side-1-3137376-39794/root/chroot_tmpdir/scmroot/rust-nu-protocol'...
$ git fetch origin be265990bbac95bfcbb48472f7ee8ef9ddb22e31:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/rust-nu-protocol
 * [new ref]         be265990bbac95bfcbb48472f7ee8ef9ddb22e31 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at be26599 Update to version 0.99.1