$ git clone -n https://src.fedoraproject.org/rpms/perl-Sys-Syscall.git /var/lib/mock/f39-build-1985755-43353/root/chroot_tmpdir/scmroot/perl-Sys-Syscall
Cloning into '/var/lib/mock/f39-build-1985755-43353/root/chroot_tmpdir/scmroot/perl-Sys-Syscall'...
$ git fetch origin fdea219741aeff7e232432fe41b43c01b0c691e9:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/perl-Sys-Syscall
 * [new ref]         fdea219741aeff7e232432fe41b43c01b0c691e9 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at fdea219 Rebuilt for https://fedoraproject.org/wiki/Fedora_39_Mass_Rebuild