$ git clone -n https://src.fedoraproject.org/rpms/rust-gitui.git /var/lib/mock/f39-build-2469808-61444/root/chroot_tmpdir/scmroot/rust-gitui
Cloning into '/var/lib/mock/f39-build-2469808-61444/root/chroot_tmpdir/scmroot/rust-gitui'...
$ git fetch origin c8a145f91ffd596cbd48c0195267b5475536ab33:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/rust-gitui
 * [new ref]         c8a145f91ffd596cbd48c0195267b5475536ab33 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at c8a145f Attempt to work around OOM problems on i686