$ git clone -n https://src.fedoraproject.org/rpms/perl-Sys-Info-Base.git /var/lib/mock/f40-build-2021019-46681/root/chroot_tmpdir/scmroot/perl-Sys-Info-Base
Cloning into '/var/lib/mock/f40-build-2021019-46681/root/chroot_tmpdir/scmroot/perl-Sys-Info-Base'...
$ git fetch origin 6d64cab41fcb365ec04d7a4cfe4529062d32caa5:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/perl-Sys-Info-Base
 * [new ref]         6d64cab41fcb365ec04d7a4cfe4529062d32caa5 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 6d64cab Rebuilt for https://fedoraproject.org/wiki/Fedora_39_Mass_Rebuild