$ git clone -n https://src.fedoraproject.org/rpms/rubygem-execjs.git /var/lib/mock/f40-build-2305426-57085/root/chroot_tmpdir/scmroot/rubygem-execjs
Cloning into '/var/lib/mock/f40-build-2305426-57085/root/chroot_tmpdir/scmroot/rubygem-execjs'...
$ git fetch origin 9c35e67a90df6743a28bcfabdab8dcf73a868c06:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/rubygem-execjs
 * [new ref]         9c35e67a90df6743a28bcfabdab8dcf73a868c06 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 9c35e67 Rebuilt for https://fedoraproject.org/wiki/Fedora_40_Mass_Rebuild