$ git clone -n https://src.fedoraproject.org/rpms/perl-WWW-Mechanize-TreeBuilder.git /var/lib/mock/f39-build-1548560-36828/root/chroot_tmpdir/scmroot/perl-WWW-Mechanize-TreeBuilder
Cloning into '/var/lib/mock/f39-build-1548560-36828/root/chroot_tmpdir/scmroot/perl-WWW-Mechanize-TreeBuilder'...
$ git fetch origin 1e45cb404b7427993e0699ce6c53df1b256548a2:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/perl-WWW-Mechanize-TreeBuilder
 * [new ref]         1e45cb404b7427993e0699ce6c53df1b256548a2 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 1e45cb4 Rebuilt for https://fedoraproject.org/wiki/Fedora_39_Mass_Rebuild