$ git clone -n https://src.fedoraproject.org/rpms/golang-github-valyala-fastjson.git /var/lib/mock/f45-build-12583-442/root/chroot_tmpdir/scmroot/golang-github-valyala-fastjson
Cloning into '/var/lib/mock/f45-build-12583-442/root/chroot_tmpdir/scmroot/golang-github-valyala-fastjson'...
$ git fetch origin 155dd061e3adf7bcffe2dbea70e1897315086660:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/golang-github-valyala-fastjson
 * [new ref]         155dd061e3adf7bcffe2dbea70e1897315086660 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 155dd06 Rebuilt for https://fedoraproject.org/wiki/Fedora_45_Mass_Rebuild