$ git clone -n https://src.fedoraproject.org/rpms/rust-rust_decimal.git /var/lib/mock/f45-build-44577-815/root/chroot_tmpdir/scmroot/rust-rust_decimal
Cloning into '/var/lib/mock/f45-build-44577-815/root/chroot_tmpdir/scmroot/rust-rust_decimal'...
$ git fetch origin cbe47124e73d3b9fd0f7c04cb32d7e600ca62591:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/rust-rust_decimal
 * [new ref]         cbe47124e73d3b9fd0f7c04cb32d7e600ca62591 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at cbe4712 Rebuilt for https://fedoraproject.org/wiki/Fedora_45_Mass_Rebuild