$ git clone -n https://src.fedoraproject.org/rpms/xml-security-c.git /var/lib/mock/f40-build-799351-142266/root/chroot_tmpdir/scmroot/xml-security-c
Cloning into '/var/lib/mock/f40-build-799351-142266/root/chroot_tmpdir/scmroot/xml-security-c'...
$ git fetch origin 74e9b583c48d7ec3aecd0c1d706083ce4a460b18:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/xml-security-c
 * [new ref]         74e9b583c48d7ec3aecd0c1d706083ce4a460b18 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 74e9b58 Rebuilt for https://fedoraproject.org/wiki/Fedora_40_Mass_Rebuild