$ git clone -n https://src.fedoraproject.org/rpms/double-conversion.git /var/lib/mock/f40-build-788876-135454/root/chroot_tmpdir/scmroot/double-conversion
Cloning into '/var/lib/mock/f40-build-788876-135454/root/chroot_tmpdir/scmroot/double-conversion'...
$ git fetch origin aff9c95d026e90b1dd030fd535a24be391f44a04:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/double-conversion
 * [new ref]         aff9c95d026e90b1dd030fd535a24be391f44a04 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at aff9c95 Rebuilt for https://fedoraproject.org/wiki/Fedora_40_Mass_Rebuild