$ git clone -n https://src.fedoraproject.org/rpms/rust-libphosh.git /var/lib/mock/f42-build-3419563-45162/root/chroot_tmpdir/scmroot/rust-libphosh
Cloning into '/var/lib/mock/f42-build-3419563-45162/root/chroot_tmpdir/scmroot/rust-libphosh'...
$ git fetch origin 284a24676b2353dbba80f7404b27d4f91f470231:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/rust-libphosh
 * [new ref]         284a24676b2353dbba80f7404b27d4f91f470231 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 284a246 Upgrade to 0.0.6