$ git clone -n https://src.fedoraproject.org/rpms/rust-virglrenderer-sys.git /var/lib/mock/f45-build-46092-830/root/chroot_tmpdir/scmroot/rust-virglrenderer-sys
Cloning into '/var/lib/mock/f45-build-46092-830/root/chroot_tmpdir/scmroot/rust-virglrenderer-sys'...
$ git fetch origin e2fbaebcda7d5f0efef722751340d54d90bfbfe7:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/rust-virglrenderer-sys
 * [new ref]         e2fbaebcda7d5f0efef722751340d54d90bfbfe7 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at e2fbaeb Rebuilt for https://fedoraproject.org/wiki/Fedora_45_Mass_Rebuild