$ git clone -n https://src.fedoraproject.org/rpms/rust-vsprintf.git /var/lib/mock/f45-build-46109-830/root/chroot_tmpdir/scmroot/rust-vsprintf
Cloning into '/var/lib/mock/f45-build-46109-830/root/chroot_tmpdir/scmroot/rust-vsprintf'...
$ git fetch origin 88cc8d3f52df84e8bfee91a6660a338bb9f87ece:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/rust-vsprintf
 * [new ref]         88cc8d3f52df84e8bfee91a6660a338bb9f87ece -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 88cc8d3 Rebuilt for https://fedoraproject.org/wiki/Fedora_45_Mass_Rebuild