$ git clone -n https://src.fedoraproject.org/rpms/rust-color-backtrace.git /var/lib/mock/f38-build-side-43-rust-devel-1414746-31450/root/chroot_tmpdir/scmroot/rust-color-backtrace
Cloning into '/var/lib/mock/f38-build-side-43-rust-devel-1414746-31450/root/chroot_tmpdir/scmroot/rust-color-backtrace'...
$ git fetch origin b2b34228c89a3c674a50b8a7294041ee2801307a:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/rust-color-backtrace
 * [new ref]         b2b34228c89a3c674a50b8a7294041ee2801307a -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at b2b3422 Rebuilt for https://fedoraproject.org/wiki/Fedora_38_Mass_Rebuild