$ git clone -n https://src.fedoraproject.org/rpms/rust-grep-pcre2.git /var/lib/mock/f40-build-2641500-66431/root/chroot_tmpdir/scmroot/rust-grep-pcre2
Cloning into '/var/lib/mock/f40-build-2641500-66431/root/chroot_tmpdir/scmroot/rust-grep-pcre2'...
$ git fetch origin e478e073c14da45e9e85bce9588b8e140d7c6246:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/rust-grep-pcre2
 * [new ref]         e478e073c14da45e9e85bce9588b8e140d7c6246 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at e478e07 Rebuilt for https://fedoraproject.org/wiki/Fedora_40_Mass_Rebuild