$ git clone -n https://src.fedoraproject.org/rpms/keychain.git /var/lib/mock/f40-build-2292455-56138/root/chroot_tmpdir/scmroot/keychain
Cloning into '/var/lib/mock/f40-build-2292455-56138/root/chroot_tmpdir/scmroot/keychain'...
$ git fetch origin 726f28a1d03f58b977259eafcce6dbe67551d878:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/keychain
 * [new ref]         726f28a1d03f58b977259eafcce6dbe67551d878 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 726f28a Rebuilt for https://fedoraproject.org/wiki/Fedora_40_Mass_Rebuild