$ git clone -n https://src.fedoraproject.org/rpms/boost-http-server.git /var/lib/mock/f40-build-2274758-55026/root/chroot_tmpdir/scmroot/boost-http-server
Cloning into '/var/lib/mock/f40-build-2274758-55026/root/chroot_tmpdir/scmroot/boost-http-server'...
$ git fetch origin 10e3b141107d8e8bcb71c7b926052a346b541756:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/boost-http-server
 * [new ref]         10e3b141107d8e8bcb71c7b926052a346b541756 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 10e3b14 Rebuilt for https://fedoraproject.org/wiki/Fedora_40_Mass_Rebuild