$ git clone -n https://src.fedoraproject.org/rpms/rust-scroll.git /var/lib/mock/f40-build-2039390-48266/root/chroot_tmpdir/scmroot/rust-scroll
Cloning into '/var/lib/mock/f40-build-2039390-48266/root/chroot_tmpdir/scmroot/rust-scroll'...
$ git fetch origin 08a342cf4ed353a0ebf21e12e22178b7b978be02:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/rust-scroll
 * [new ref]         08a342cf4ed353a0ebf21e12e22178b7b978be02 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 08a342c Regenerate with rust2rpm v24