$ git clone -n https://src.fedoraproject.org/rpms/rust-konst.git /var/lib/mock/f38-build-side-43-rust-devel-1397394-31052/root/chroot_tmpdir/scmroot/rust-konst
Cloning into '/var/lib/mock/f38-build-side-43-rust-devel-1397394-31052/root/chroot_tmpdir/scmroot/rust-konst'...
$ git fetch origin 5d5e1bd2cd17d347073b7e8834dd059fbff9812a:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/rust-konst
 * [new ref]         5d5e1bd2cd17d347073b7e8834dd059fbff9812a -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 5d5e1bd Update to version 0.2.19