$ git clone -n https://src.fedoraproject.org/rpms/rust-runtime-format.git /var/lib/mock/f45-build-44514-814/root/chroot_tmpdir/scmroot/rust-runtime-format
Cloning into '/var/lib/mock/f45-build-44514-814/root/chroot_tmpdir/scmroot/rust-runtime-format'...
$ git fetch origin 967658f47ca769324276dbb2cd0429b2a31b1c47:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/rust-runtime-format
 * [new ref]         967658f47ca769324276dbb2cd0429b2a31b1c47 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 967658f Rebuilt for https://fedoraproject.org/wiki/Fedora_45_Mass_Rebuild