$ git clone -n https://src.fedoraproject.org/rpms/rust-version_check.git /var/lib/mock/f45-build-46069-830/root/chroot_tmpdir/scmroot/rust-version_check
Cloning into '/var/lib/mock/f45-build-46069-830/root/chroot_tmpdir/scmroot/rust-version_check'...
$ git fetch origin bccea1863a4be84c260365da3b26b38eeb9e7f8a:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/rust-version_check
 * [new ref]         bccea1863a4be84c260365da3b26b38eeb9e7f8a -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at bccea18 Rebuilt for https://fedoraproject.org/wiki/Fedora_45_Mass_Rebuild