$ git clone -n https://src.fedoraproject.org/rpms/srain.git /var/lib/mock/f40-build-2094309-50357/root/chroot_tmpdir/scmroot/srain
Cloning into '/var/lib/mock/f40-build-2094309-50357/root/chroot_tmpdir/scmroot/srain'...
$ git fetch origin d7a8c9f0e705330c5d01ca8b4fd6defc52eb71d9:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/srain
 * [new ref]         d7a8c9f0e705330c5d01ca8b4fd6defc52eb71d9 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at d7a8c9f Rebuilt for https://fedoraproject.org/wiki/Fedora_39_Mass_Rebuild