$ git clone -n https://src.fedoraproject.org/rpms/rubygem-async_sinatra.git /var/lib/mock/f40-build-2305419-57085/root/chroot_tmpdir/scmroot/rubygem-async_sinatra
Cloning into '/var/lib/mock/f40-build-2305419-57085/root/chroot_tmpdir/scmroot/rubygem-async_sinatra'...
$ git fetch origin d7e67d0a973b97184ced13057cbc9a29e058be5a:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/rubygem-async_sinatra
 * [new ref]         d7e67d0a973b97184ced13057cbc9a29e058be5a -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at d7e67d0 Rebuilt for https://fedoraproject.org/wiki/Fedora_40_Mass_Rebuild