$ git clone -n https://src.fedoraproject.org/rpms/rust-salsa20.git /var/lib/mock/f40-build-2643270-66482/root/chroot_tmpdir/scmroot/rust-salsa20
Cloning into '/var/lib/mock/f40-build-2643270-66482/root/chroot_tmpdir/scmroot/rust-salsa20'...
$ git fetch origin a64c40c6bef9cba459bba8f213b6ba0d6b5c65c4:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/rust-salsa20
 * [new ref]         a64c40c6bef9cba459bba8f213b6ba0d6b5c65c4 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at a64c40c Rebuilt for https://fedoraproject.org/wiki/Fedora_40_Mass_Rebuild